Hughes Socol Piers Resnick DYM, Ltd. (Hughes Socol) appealed a determination issued to it on February 15, 2012, by the Chicago Office of the Department of Energy (DOE). The Chicago Office had responded to a request that Hughes Socol had filed under the Freedom of Information Act (FOIA), 5 U.S.C. § 552, as implemented by the DOE in 10 C.F.R. Part 1004. The Chicago Office had identified eight responsive documents, but it withheld them under FOIA Exemption 4. This appeal, if granted, would require the Chicago Office to release the withheld information to Hughes Socol.